This happens on the very first start of MTG Studio. It tries to open the license agreement confirmation form which is displayed within an embedded Internet Explorer. The error is raised by the JScript.dll which is used to process Java Script oddly enough the License Agreement does not contain much of a Java Script code.

Which Internet Explorer version you are using and is Java Script enabled in it?

I'm using IE8, although I never use IE, so it may not be up to date. As far as I can tell, javascript is enabled on IE. I checked via Tools>Internet Options>Advanced tab. Is there somewhere else I should be checking? Could it be that my jscript.dll is corrupted somehow? I'm not having problems with anything else.

ok, with a little work (nothing serious), I have MTG Studio working again! YEAH! For whatever reason, my collection has been wiped out though. I went through the backup, it is empty as well. Not a huge loss, however, I haven't been able to update it in a while so re-entering was going to have to happen anyways.